W40S12BMD5-01Z90 brand new Nidec 4028 12V 0.64A 4CM server power cooling fan, all copper motor, ball bearing, strong wind, quiet operation, suitable for most servers, such as Antminer, Innosilicon, Whatsminer, Avalon, etc.

Product parameters:

Brand: NIDEC

Model: W40S12BM5-07

Voltage: DC 12V

Current: 0.64A

Size: 40*40*28MM

Speed: 18000±5%RPM

Power: 7.68W

Noise: 43DBA

Weight: 49.1 grams

Lifespan: 50,000 hours at 40°C

Bearing structure: double ball bearing

Wiring method: red wire positive, black wire negative